在全球化的历史进程中，弦板腔音乐及其生命载体——皮影戏曲艺术的迅速衰亡甚至面临消失，是不可逆转的潮流。

In the process of globalization, the rapid decline and even disappearance of xianbanqiang music and its life carrier, the puppet show art is an irreversible trend.

youdao

这就是圆号上的泛音列,活瓣的作用是增长或减短,空气柱的高度,很像大提琴指板上的弦

That's the harmonic series that's on that, and what the valves do is they shorten and lengthen that vibrating column of air very much like the cello string on the fingerboard.

youdao

在木材弦切面可见条纹。平切单板-地板、板。板材-家俱、槛、板。

Stripes sometimes noticeable on flatsawn face. Easily worked. Sliced veneer-flooring and wall. Sawn lumber-furniture, door-sills and flooring.

youdao

That's the harmonic series that's on that, and what the valves do is they shorten and lengthen that vibrating column of air very much like the cello string on the fingerboard.

这就是圆号上的泛音列,活瓣的作用是增长或减短,空气柱的高度,很像大提琴指板上的弦

耶鲁公开课 - 聆听音乐课程节选